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<div class="title">qwt_point_polar.cpp</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * QwtPolar Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 2008   Uwe Rathmann</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160; </div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &quot;qwt_point_polar.h&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_math.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160; </div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#if QT_VERSION &gt;= 0x050200</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160; </div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="keyword">static</span> <a class="code" href="class_qwt_point_polar.html">QwtPointPolar</a> qwtPointToPolar( <span class="keyword">const</span> QPointF&amp; point )</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;{</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_point_polar.html">QwtPointPolar</a>( point );</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;}</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160; </div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160; </div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">namespace</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;{</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>RegisterQwtPointPolar</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    {</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;        <span class="keyword">inline</span> RegisterQwtPointPolar()</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;        {</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;            qRegisterMetaType&lt; QwtPointPolar &gt;();</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160; </div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#if QT_VERSION &gt;= 0x050200</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;            QMetaType::registerConverter&lt; QPointF, QwtPointPolar &gt;( qwtPointToPolar );</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;            QMetaType::registerConverter&lt; QwtPointPolar, QPointF &gt;( &amp;<a class="code" href="class_qwt_point_polar.html#a678cbfb29627d537aaf2d15c1802460d">QwtPointPolar::toPoint</a> );</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;        }</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160; </div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    } qwtRegisterQwtPointPolar;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;}</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="class_qwt_point_polar.html#a269241ca9f94f641063fe896cdd77165">   44</a></span>&#160;<a class="code" href="class_qwt_point_polar.html#a365875acf86a9f052e12784b5f2f7d44">QwtPointPolar::QwtPointPolar</a>( <span class="keyword">const</span> QPointF&amp; p )</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;{</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    m_radius = std::sqrt( qwtSqr( p.x() ) + qwtSqr( p.y() ) );</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    m_azimuth = std::atan2( p.y(), p.x() );</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;}</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="class_qwt_point_polar.html#a8cd4f93356a8a8c07400c3ad9ff1b560">   54</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_point_polar.html#a8cd4f93356a8a8c07400c3ad9ff1b560">QwtPointPolar::setPoint</a>( <span class="keyword">const</span> QPointF&amp; p )</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;{</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    m_radius = std::sqrt( qwtSqr( p.x() ) + qwtSqr( p.y() ) );</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    m_azimuth = std::atan2( p.y(), p.x() );</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;}</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160; </div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="class_qwt_point_polar.html#a678cbfb29627d537aaf2d15c1802460d">   68</a></span>&#160;QPointF <a class="code" href="class_qwt_point_polar.html#a678cbfb29627d537aaf2d15c1802460d">QwtPointPolar::toPoint</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="keywordflow">if</span> ( m_radius &lt;= 0.0 )</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="keywordflow">return</span> QPointF( 0.0, 0.0 );</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160; </div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> x = m_radius * std::cos( m_azimuth );</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> y = m_radius * std::sin( m_azimuth );</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160; </div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    <span class="keywordflow">return</span> QPointF( x, y );</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;}</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="class_qwt_point_polar.html#affeb7998198d3dfdbb409896199b535d">   90</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_qwt_point_polar.html#affeb7998198d3dfdbb409896199b535d">QwtPointPolar::operator==</a>( <span class="keyword">const</span> <a class="code" href="class_qwt_point_polar.html">QwtPointPolar</a>&amp; other )<span class="keyword"> const</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <span class="keywordflow">return</span> m_radius == other.m_radius &amp;&amp; m_azimuth == other.m_azimuth;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;}</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="class_qwt_point_polar.html#a929856ff791cc8cbb985489058ece4ef">  105</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_qwt_point_polar.html#a929856ff791cc8cbb985489058ece4ef">QwtPointPolar::operator!=</a>( <span class="keyword">const</span> <a class="code" href="class_qwt_point_polar.html">QwtPointPolar</a>&amp; other )<span class="keyword"> const</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    <span class="keywordflow">return</span> m_radius != other.m_radius || m_azimuth != other.m_azimuth;</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;}</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160; </div>
<div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="class_qwt_point_polar.html#aab6516a84d4e0a5850f26e4dbaaad0c8">  118</a></span>&#160;<a class="code" href="class_qwt_point_polar.html">QwtPointPolar</a> <a class="code" href="class_qwt_point_polar.html#aab6516a84d4e0a5850f26e4dbaaad0c8">QwtPointPolar::normalized</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_point_polar.html#a20a4dd477b5b204b080fed08aa04a7ce">radius</a> = qwtMaxF( m_radius, 0.0 );</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160; </div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_qwt_point_polar.html#a4b3ebfcbe0d9b6a7e0b39e50d2895510">azimuth</a> = m_azimuth;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    <span class="keywordflow">if</span> ( azimuth &lt; -2.0 * M_PI || azimuth &gt;= 2 * M_PI )</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        <a class="code" href="class_qwt_point_polar.html#a4b3ebfcbe0d9b6a7e0b39e50d2895510">azimuth</a> = std::fmod( m_azimuth, 2 * M_PI );</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160; </div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_point_polar.html#a4b3ebfcbe0d9b6a7e0b39e50d2895510">azimuth</a> &lt; 0.0 )</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        <a class="code" href="class_qwt_point_polar.html#a4b3ebfcbe0d9b6a7e0b39e50d2895510">azimuth</a> += 2 * M_PI;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160; </div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_point_polar.html#a365875acf86a9f052e12784b5f2f7d44">QwtPointPolar</a>( <a class="code" href="class_qwt_point_polar.html#a4b3ebfcbe0d9b6a7e0b39e50d2895510">azimuth</a>, <a class="code" href="class_qwt_point_polar.html#a20a4dd477b5b204b080fed08aa04a7ce">radius</a> );</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;}</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160; </div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="preprocessor">#ifndef QT_NO_DEBUG_STREAM</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160; </div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;<span class="preprocessor">#include &lt;qdebug.h&gt;</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160; </div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;QDebug operator&lt;&lt;( QDebug debug, <span class="keyword">const</span> <a class="code" href="class_qwt_point_polar.html">QwtPointPolar</a>&amp; point )</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;{</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    debug.nospace() &lt;&lt; <span class="stringliteral">&quot;QwtPointPolar(&quot;</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;                    &lt;&lt; point.<a class="code" href="class_qwt_point_polar.html#a4b3ebfcbe0d9b6a7e0b39e50d2895510">azimuth</a>() &lt;&lt; <span class="stringliteral">&quot;,&quot;</span> &lt;&lt; point.<a class="code" href="class_qwt_point_polar.html#a20a4dd477b5b204b080fed08aa04a7ce">radius</a>() &lt;&lt; <span class="stringliteral">&quot;)&quot;</span>;</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160; </div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    <span class="keywordflow">return</span> debug.space();</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;}</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160; </div>
<div class="ttc" id="aclass_qwt_point_polar_html"><div class="ttname"><a href="class_qwt_point_polar.html">QwtPointPolar</a></div><div class="ttdoc">A point in polar coordinates.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8h_source.html#l00028">qwt_point_polar.h:29</a></div></div>
<div class="ttc" id="aclass_qwt_point_polar_html_a20a4dd477b5b204b080fed08aa04a7ce"><div class="ttname"><a href="class_qwt_point_polar.html#a20a4dd477b5b204b080fed08aa04a7ce">QwtPointPolar::radius</a></div><div class="ttdeci">double radius() const</div><div class="ttdoc">Returns the radius.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8h_source.html#l00102">qwt_point_polar.h:102</a></div></div>
<div class="ttc" id="aclass_qwt_point_polar_html_a365875acf86a9f052e12784b5f2f7d44"><div class="ttname"><a href="class_qwt_point_polar.html#a365875acf86a9f052e12784b5f2f7d44">QwtPointPolar::QwtPointPolar</a></div><div class="ttdeci">QwtPointPolar()</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8h_source.html#l00071">qwt_point_polar.h:71</a></div></div>
<div class="ttc" id="aclass_qwt_point_polar_html_a4b3ebfcbe0d9b6a7e0b39e50d2895510"><div class="ttname"><a href="class_qwt_point_polar.html#a4b3ebfcbe0d9b6a7e0b39e50d2895510">QwtPointPolar::azimuth</a></div><div class="ttdeci">double azimuth() const</div><div class="ttdoc">Returns the azimuth.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8h_source.html#l00108">qwt_point_polar.h:108</a></div></div>
<div class="ttc" id="aclass_qwt_point_polar_html_a678cbfb29627d537aaf2d15c1802460d"><div class="ttname"><a href="class_qwt_point_polar.html#a678cbfb29627d537aaf2d15c1802460d">QwtPointPolar::toPoint</a></div><div class="ttdeci">QPointF toPoint() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8cpp_source.html#l00068">qwt_point_polar.cpp:68</a></div></div>
<div class="ttc" id="aclass_qwt_point_polar_html_a8cd4f93356a8a8c07400c3ad9ff1b560"><div class="ttname"><a href="class_qwt_point_polar.html#a8cd4f93356a8a8c07400c3ad9ff1b560">QwtPointPolar::setPoint</a></div><div class="ttdeci">void setPoint(const QPointF &amp;)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8cpp_source.html#l00054">qwt_point_polar.cpp:54</a></div></div>
<div class="ttc" id="aclass_qwt_point_polar_html_a929856ff791cc8cbb985489058ece4ef"><div class="ttname"><a href="class_qwt_point_polar.html#a929856ff791cc8cbb985489058ece4ef">QwtPointPolar::operator!=</a></div><div class="ttdeci">bool operator!=(const QwtPointPolar &amp;) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8cpp_source.html#l00105">qwt_point_polar.cpp:105</a></div></div>
<div class="ttc" id="aclass_qwt_point_polar_html_aab6516a84d4e0a5850f26e4dbaaad0c8"><div class="ttname"><a href="class_qwt_point_polar.html#aab6516a84d4e0a5850f26e4dbaaad0c8">QwtPointPolar::normalized</a></div><div class="ttdeci">QwtPointPolar normalized() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8cpp_source.html#l00118">qwt_point_polar.cpp:118</a></div></div>
<div class="ttc" id="aclass_qwt_point_polar_html_affeb7998198d3dfdbb409896199b535d"><div class="ttname"><a href="class_qwt_point_polar.html#affeb7998198d3dfdbb409896199b535d">QwtPointPolar::operator==</a></div><div class="ttdeci">bool operator==(const QwtPointPolar &amp;) const</div><div class="ttdoc">Compare 2 points.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__polar_8cpp_source.html#l00090">qwt_point_polar.cpp:90</a></div></div>
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